Conquer Technical Trails with lightweight Precision.
There’s something empowering about choosing the harder path — the steeper hill, the longer route, the trail that makes your legs burn and your heart beat harder. If that’s where you find your focus, your freedom, your strength — then Fosen was built for you.
Why it is your trail partner on tougher terrain:
• Light, fast, and made for motion. At just 367g (EU 39), Fosen gives you the agility of a low-cut shoe with the confidence of a mountain boot. It’s perfect for those who move quickly and purposefully over uneven, technical trails.
• Dry feet in wet conditions. The GORE-TEX® with ePE membrane (PFAS-free), keeps your feet dry, no matter the forecast. Breathable, waterproof, and built for unpredictable weather. Fosen respects both your journey and the planet.
• Precision fit for better control. The extended lacing system lets you fine-tune the fit for your foot and terrain — tighter for descents, looser for open flats. It’s support adapts to how you move.
• Secure and comfortable footing when the trail fights back. Built on Alfa’s NORTIK last, Fosen hugs your foot while giving it room to move naturally. The design keeps you balanced, reduces fatigue, and gives you control when every step counts.
• Stronger than it looks and made to last. Crafted with a bio-circular Dyneema® fiber, this upper is lightweight but tough — resistant to abrasion, wear, and time. Built for easy repair.
They're light enough to let you keep climbing, strong enough to handle rough ground, and smart enough to keep your feet dry, stable, and comfortable from base to ridge. The versatile look let’s you use this at any point of your journey, from you exit your door, to the top of a mountain.
For the hikes that challenge you — and the ones that remind you why you love it.
Fosen is the shoe for those who seek out elevation, push through switchbacks, and smile at the top — not because it was easy, but because it was worth it.
Footprint:
Open factory list
Bio-based Dyneema®
Repairable solutions
ePE GORE-TEX membrane
PFAS free